• london office cleaning
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Accreditations and memberships

Contractor of the Year

Xenon is proud to have won the prestigious ‘Contractor of the Year Award’ from GVA West End Management Award for both 2012 and 2013.

British institute of cleaning servicesBICS

The British Institute of Cleaning Services is the largest independent, professional and educational body within the cleaning industry with almost 5,000 individual and corporate members in the UK and abroad.

safe contractorSAFE Contractor

A leading health and safety pre-qualification assessment scheme dedicated to promoting higher standards of competence and compliance through the provision of relevant industry specific and tailored health and safety assessments for all professions and sectors.

SM&MS Contractor Plus

An online management accreditation scheme that assesses supplier capability and competency. Contractor Plus provides clients with a robust contractor health and safety pre-qualification system. The system is web-based, simple to use and cost effective. Health and Safety consultants deal directly with the contractor to check their health and safety documentation including risk assessments, policies, method statements, insurance levels, etc.


Established in 1997 to provide an efficient, outsourced supply chain service to public and private sector organisations, Exor enhances business performance through procurement and compliance services.

national federation of master window cleanersFederation of Window Cleaners

The Federation of Window Cleaners is an authoritative organisation specifically concerned with the window cleaning industry and its subsidiary services.